Device for applying mosaic ornamentation to cement slabs.



FRANZ JOSEF WASSEBMANN, 0F SPAHL, GERMANY.

DEVICE FOR APPLYING MOSAIC ORNAMENTATION TO CEMENT SLA BS.

Specification of Letters Patent.

Patented June 13, 1911.

Application filed September 29, 1910; Serial No. 584,495.

To all whom it may concern.

Be it known that I, FRANZ J osnr l/Vnssnn- MANN, a subject of theEmperor of Germany, residing at Spahl, SaXe-Weimar, in theGerman Empire,have invented a Device for Applying Mosaic Ornament-ation to CementSlabs, of which the following is a specification.

l/Vhen it is desired to ornament cement slabs and the like in imitationof mosaic, the different colors employed must ordinarily be applied tothe slabs by means of separate stencils. Apart from the tardiness andconsequent expensiveness of this process, a uniform application of thepigments can hardly be effected.

The present invention relates to a device by means of which all thedifferent colors can be simultaneously applied, such deviceconsisting'of a color receptacle which covers the surface of the slaband which is provided with vertical partitions coinciding with theoutlines of the design to be produced. A grate, intersecting thepartitions at some distance from the slab, is provided with means foradmitting a certain quantity of pigment and feeding the same on to theslab where it is deposited in layers of uniform thickness.

The invention is illustrated by way of eX- ample in the accompanyingdrawings, Figure 1 representing a plan of the grate and the lower partof the device, Fig. 2, a vertical section through the device, and Figs.3 and 4, sectional views on an enlarged scale of the grate, showing thefeeding elements in different positions.

On the edge of 'a mold a, containing the slab w, a frame 6 is disposed.In the upper part of said frame a recess 0 is formed for the receptionof the grate 72. and the feeding elements. The latter consist of fourmetal plates d, e, f, 9, having slots which coincide with theinterstices of the grate h. Two of said plates are arranged at each sideof the'grate so as to slide on the latter and on each other. The innerplates 6, g, are connected to a frame 7c which is disposed inside aframe 2", the outer plates d, f being connected to the latter. The framek is adapted to slide in one direction inside the frame 2', and both canbe displaced relative to the grate h, the latter being firmly connectedto the frame I) by means of pins 8 passing through slots in the lowerpair of plates. A spring Z, arranged in recesses between the frames 2',70, tends to maintain the frames in the position shown in Fig. 1. At theopposite side of the frames, two doublearmed levers 0 are provided whichare piv oted at 2 to the frame 6. The outer ends of said levers arepivoted to links 7) which are passed through the frame 6 and fitted bymeans of circular heads 1 in recesses in the frame 70. The inner ends'ofthe levers are rounded off and adapted to abut against the frame 2'. Atthe side opposite the levers 0, the frame 2' carries a button a on astem which is passed throughthe wall m of the frame I). At a pressure onsaid button, the

frame 2' and the plates (Z, are slid in the di V rection of the arrow.This movement is transmitted to the levers 0 which turn about theirpivots and push the frame it and the plates e, g in theoppositedirection. When the button is released, the spring Z returns theelements to their normal position.

The arrangement is such that, when the elements are in their normalposition, the slots of the plates (Z, c are opposite the interstices ofthe grate, whereas the plates 7'', g are disposed with their slotsstaggered relative to each other and to the interstices, so that thebottom side of the grate is closed. This position, which is shown inFig. 3, is reversed when the button a is depressed, the top side of thegrate being then closed and the bottom side open, as shown in Fig. i.

A frame 6 of angular cross-section, is supported on the walls at of theframe I) so as cover the frames and 7c. Within the vertical flange ofsaid frame the color receptacle u is arranged.

In addition to the parallel bars forming the grate h, the latter is alsoprovided with bars 3 and a forming the outlines of the design to beproduced on the slab w. These bars are continued downward by partitionsw arranged in the frame 6, and upward by partitions 1; arranged in thereceptacle u.

The compartments thus formed in the receptacle, are filled with powderedcoloring matter, the colors of the different compartments being variedin accordance with the effect to be produced. Since the grate h isnormally open at the top, all its interstices will be filled up with thepigments which are supported by the plates f, 9. At a depression of thebutton a and consequent reversal of the position of the plates, aspreviously described, the color supply will be cut off by the plates (1,6, While the lower plates open so as to feed the pigments containedwithin the grate on to the slab w. lVhile falling through the distancebetween the grate and the slab, the pigments will be distributed so asto form layers of uniform thickness on the slab. A mixing of thedifferent colors is prevented by the partitions w which extend rightdown to the surface of the slab and determine the design on the latter.

The bars y, 2 in the grate might be dispensed with, since a mixing ofthe colors in the interstices thereof cannot take place.

A convenient method is thus obtained for depositing the different colorssimultaneously and uniformly on the slab.

I claim:

A device for applying mosaic ornamentation to cement slabs and the like,compris ing an open color receptacle covering the surface of the slab,vertical partitions in said receptacle extending to the surface of theslab, coinciding with the outlines of the design to be produced andforming compartments for the reception of the different colors, a grateintersecting the partitions at some distance from the slab, twosuperposed slidable plates at each side of the grate for supporting thecolors, the plates having slots coinciding with the interstices of thegrate so as to admit the colors when in coinciding position and obstructthe same when in staggered position relative to the grate, a framesurrounding the grate and connected to the inner pair of plates, a framesurrounding the aforementioned frame and connected to the outer pair ofplates, the frames being slidable relative to each other and to thegrate, a spring between the frames tending to maintain the same with theupper pair of plates in coinciding, and the lower pair in staggeredposition, double-armed levers turning about fixed pivots, one end ofeachrlever being connected to the inner and the other to the outer frameso as to compel the frames, when displaced, to move in oppositedirections, and a press button on the outer frame for sliding the framesso that the upper pair of plates closes and the lower pair opens forfeeding the colors on to the slab, substantially as set forth.

FRANZ J OSEF WASSERMANN. Witnesses:

RICHARD WVAssEnMANN, EDMUND REINHARDT.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

